# Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web do
import Pleroma.Web.Router.Helpers
import Pleroma.Web.TranslationHelpers
+ alias Pleroma.Plugs.PlugHelper
+
plug(:set_put_layout)
defp set_put_layout(conn, _) do
put_layout(conn, Pleroma.Config.get(:app_layout, "app.html"))
end
+
+ # Marks a plug intentionally skipped and blocks its execution if it's present in plugs chain
+ defp skip_plug(conn, plug_module) do
+ try do
+ plug_module.ensure_skippable()
+ rescue
+ UndefinedFunctionError ->
+ raise "#{plug_module} is not skippable. Append `use Pleroma.Web, :plug` to its code."
+ end
+
+ PlugHelper.append_to_skipped_plugs(conn, plug_module)
+ end
+
+ # Here we can apply before-action hooks (e.g. verify whether auth checks were preformed)
+ defp action(conn, params) do
+ if Pleroma.Plugs.AuthExpectedPlug.auth_expected?(conn) &&
+ not PlugHelper.plug_called_or_skipped?(conn, Pleroma.Plugs.OAuthScopesPlug) do
+ conn
+ |> render_error(
+ :forbidden,
+ "Security violation: OAuth scopes check was neither handled nor explicitly skipped."
+ )
+ |> halt()
+ else
+ super(conn, params)
+ end
+ end
end
end
rescue
error ->
Logger.error(
- "#{__MODULE__} failed to render #{inspect({view, template})}: #{inspect(error)}"
+ "#{__MODULE__} failed to render #{inspect({view, template})}\n" <>
+ Exception.format(:error, error, __STACKTRACE__)
)
- Logger.error(inspect(__STACKTRACE__))
nil
end
end
end
+ def plug do
+ quote do
+ alias Pleroma.Plugs.PlugHelper
+
+ def ensure_skippable, do: :noop
+
+ @impl Plug
+ @doc "If marked as skipped, returns `conn`, and calls `perform/2` otherwise."
+ def call(%Plug.Conn{} = conn, options) do
+ if PlugHelper.plug_skipped?(conn, __MODULE__) do
+ conn
+ else
+ conn
+ |> PlugHelper.append_to_called_plugs(__MODULE__)
+ |> perform(options)
+ end
+ end
+ end
+ end
+
@doc """
When used, dispatch to the appropriate controller/view/etc.
"""